package JVM;

import 算法.NiuKe.*;
/**
 * @author: 谢君臣
 * @create: 2020-11-29 10:38
 * @founction: XXXX
 */
public class TestA {
    public static void main(String[] args) {
        int a = 2;
        a <<=1;
        System.out.println(a);
        TreeNode treeNode = new TreeNode();
    }
}
